Joining all object of one array into same array as per key

Question

I have this

[{"n1":{"0":"2"},"f1":{"0":3}},{"n1":{"1":"3"},"f1":{"1":2}}]

I want this

[{"n1":{"0":"2", "1":"3"},"f1":{"0":3, "1":2}}]

using underscore or Jquery.. Please guide...

Are you sure you're putting it correctly? That looks like an input of array with two object, with the output of array with one object. This isn't outputting an array with keys. — rrd
– rrd, Commented May 2, 2017 at 6:55

tanmay · Accepted Answer · 2017-05-02 06:45:55Z

3

You could pull this out with pure JS using the ultimate reduce (I fondly call it one-function army) and a bunch of for-ins. Something like this:

let arr = [{"n1":{"0":"2"},"f1":{"0":3}},{"n1":{"1":"3"},"f1":{"1":2}}]

let modified = arr.reduce((res, objs) => {
  for (let key in objs) {
    res[key] = res[key] || {}
    for (let i in objs[key]) {
      res[key][i] = objs[key][i]
    }
  }
  return res
}, {})

let result = [modified]

console.log(result)

.as-console-wrapper { max-height: 100% !important; top: 0; }

answered May 2, 2017 at 6:45

tanmay

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3 Comments

tanmay Over a year ago

@AsadAliKhan glad that helped! :)

Asad Ali Khan Over a year ago

One more help how to change [{0: "1", 1: "2"}] to ["1","2"]

tanmay Over a year ago

@AsadAliKhan sure, hard to explain here in comments.. can you put up a new question.. you can send the question link here if you want.. this way if I can't find a solution, at least someone else will

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